moment/src/main.cpp
2022-01-24 01:15:16 +01:00

499 lines
17 KiB
C++

// Copyright Mirage authors & contributors <https://github.com/mirukana/mirage>
// and Moment contributors <https://gitlab.com/mx-moment/moment>
// SPDX-License-Identifier: LGPL-3.0-or-later
// This file creates the application, registers custom objects for QML
// and launches Window.qml (the root component).
#include <QDataStream> // must be first include to avoid clipboard.h errors
#include <QApplication>
#include <QQmlEngine>
#include <QQmlContext>
#include <QQmlComponent>
#include <QFileInfo>
#include <QQuickStyle>
#include <QFontDatabase>
#include <QDateTime>
#include <QStandardPaths>
#include <QDir>
#include <QFile>
#include <QLockFile>
#include <QMessageBox>
#include <signal.h>
#ifdef Q_OS_UNIX
#include <unistd.h>
#endif
#include "utils.h"
#include "clipboard.h"
#include "clipboard_image_provider.h"
QLockFile *lockFile = nullptr;
void loggingHandler(
QtMsgType type,
const QMessageLogContext &context,
const QString &msg
) {
// Override default QML logger to provide colorful logging with times
Q_UNUSED(context)
// Hide dumb warnings about thing we can't fix without breaking
// compatibilty with Qt < 5.14/5.15
if (msg.contains("QML Binding: Not restoring previous value because"))
return;
if (msg.contains("QML Connections: Implicitly defined onFoo properties"))
return;
// Hide layout-related spam introduced in Qt 5.14
if (msg.contains("Qt Quick Layouts: Detected recursive rearrange."))
return;
const char* level =
type == QtDebugMsg ? "~" :
type == QtInfoMsg ? "i" :
type == QtWarningMsg ? "!" :
type == QtCriticalMsg ? "X" :
type == QtFatalMsg ? "F" :
"?";
QString boldColor = "", color = "", clearFormatting = "";
#ifdef Q_OS_UNIX
// Don't output escape codes if stderr is piped or redirected to a file
if (isatty(fileno(stderr))) {
const QString ansiColor =
type == QtInfoMsg ? "2" : // green
type == QtWarningMsg ? "3" : // yellow
type == QtCriticalMsg ? "1" : // red
type == QtFatalMsg ? "5" : // purple
"4"; // blue
boldColor = "\e[1;3" + ansiColor + "m";
color = "\e[3" + ansiColor + "m";
clearFormatting = "\e[0m";
}
#endif
fprintf(
stderr,
"%s%s%s %s%s |%s %s\n",
boldColor.toUtf8().constData(),
level,
clearFormatting.toUtf8().constData(),
color.toUtf8().constData(),
QDateTime::currentDateTime().toString("hh:mm:ss").toUtf8().constData(),
clearFormatting.toUtf8().constData(),
msg.toUtf8().constData()
);
}
void onExitSignal(int signum) {
QApplication::exit(128 + signum);
}
void migrateFile(QDir source, QDir destination, QString fname) {
if (! QFile::copy(source.filePath(fname), destination.filePath(fname)))
qWarning() << "Could not migrate" << fname;
}
void migrateShallowDirectory(
QDir sourceParent, QDir destinationParent, QString dname
) {
if (sourceParent.exists(dname)) {
if (! destinationParent.mkpath(dname)) {
qWarning() << "Could not create directory"
<< destinationParent.filePath(dname);
exit(EXIT_FAILURE);
}
QDir source(sourceParent.filePath(dname));
QDir destination(destinationParent.filePath(dname));
QFileInfoList files = source.entryInfoList();
for (QFileInfo file : files) {
if(file.fileName() == "." || file.fileName() == "..")
continue;
migrateFile(source, destination, file.fileName());
}
}
}
void offerMigrateFromMirage(
QDir configDirMoment, QDir configDirMirage,
QDir dataDirMoment, QDir dataDirMirage
) {
QMessageBox dialog;
dialog.setText("Would you like Moment to re-use your logins, "
"encryption keys, configuration and themes from Mirage?");
dialog.setInformativeText(
"Will copy "+configDirMirage.path()+""+configDirMoment.path()
+"\nWill copy "+dataDirMirage.path()+""+dataDirMoment.path());
dialog.addButton(QMessageBox::Yes);
dialog.addButton(QMessageBox::No);
dialog.addButton(QMessageBox::Cancel);
int result = dialog.exec();
if (result == QMessageBox::Yes) {
qWarning("Migrating config and data from Mirage");
if (! configDirMoment.mkpath(".")) {
qFatal("Could not create config directory");
exit(EXIT_FAILURE);
}
if (! dataDirMoment.mkpath(".")) {
qFatal("Could not create data directory");
exit(EXIT_FAILURE);
}
migrateFile(configDirMirage, configDirMoment, "settings.py");
migrateFile(configDirMirage, configDirMoment, "settings.gui.json");
migrateFile(configDirMirage, configDirMoment, "accounts.json");
migrateFile(dataDirMirage, dataDirMoment, "history.json");
migrateFile(dataDirMirage, dataDirMoment, "state.json");
migrateShallowDirectory(dataDirMirage, dataDirMoment, "themes");
migrateShallowDirectory(dataDirMirage, dataDirMoment, "encryption");
} else if (result == QMessageBox::No) {
// Nothing to do. Proceed with starting the app
qWarning("Not migrating");
return;
} else {
// Neither "Yes" nor "No" was chosen.
// We can't know what the user wants. Just quit.
qWarning("Quitting. You can decide about migration next time.");
exit(EXIT_SUCCESS);
}
}
bool shouldMigrateFromMirage() {
QString genericConfig = QStandardPaths::writableLocation(
QStandardPaths::GenericConfigLocation);
QString genericData = QStandardPaths::writableLocation(
QStandardPaths::GenericDataLocation);
// Check whether Moment config already exists
{
QString customConfigDirMoment(
qEnvironmentVariable("MOMENT_CONFIG_DIR")
);
if (! customConfigDirMoment.isEmpty()) {
// MOMENT_CONFIG_DIR is set.
// Moment would definitely use this as the config directory.
if (QDir(customConfigDirMoment).exists())
// But it already exists.
// So this is not the first time Moment was started.
return false;
} else {
// No MOMENT_CONFIG_DIR, so check the default config directory.
if (QDir(genericConfig + "/moment").exists())
// The default config folder exists.
// So this is not the first time Moment was started.
return false;
}
}
// Check whether Moment data already exists
{
QString customDataDirMoment(qEnvironmentVariable("MOMENT_DATA_DIR"));
if (! customDataDirMoment.isEmpty()) {
// MOMENT_DATA_DIR is set.
// Moment would definitely use this as the data directory.
if (QDir(customDataDirMoment).exists())
// But it already exists.
// So this is not the first time Moment was started.
return false;
} else {
// No MOMENT_DATA_DIR, so check the default data directory.
if (QDir(genericData + "/moment").exists())
// The default data folder exists.
// So this is not the first time Moment was started.
return false;
}
}
// Check whether Mirage config exists
{
QString customConfigDirMirage(
qEnvironmentVariable("MIRAGE_CONFIG_DIR")
);
if (! customConfigDirMirage.isEmpty()) {
// MIRAGE_CONFIG_DIR is set.
// Mirage would definitely use this as the config directory.
if (! QDir(customConfigDirMirage).exists())
// But this directory does not exist.
// So there is nowhere to migrate from.
return false;
} else {
// No MIRAGE_CONFIG_DIR, so check the default config directory.
// Check /matrix-mirage (Debian) first, since it is more specific
if (! QDir(genericConfig + "/matrix-mirage").exists())
// Default Debian config folder does not exist,
// so check whether the normal /mirage exists
if (! QDir(genericConfig + "/mirage").exists())
// No, neither /matrix-mirage nor /mirage exist.
// So there is nowhere to migrate from.
return false;
}
}
// We found out that there is no Moment config dir nor Moment data dir,
// but there is a Mirage config dir which can be migrated from.
// We could also check for Mirage data dir but it doesn't really matter.
// User should definitely be prompted for migration.
return true;
}
void tryMigrateFromMirage() {
QString genericConfig = QStandardPaths::writableLocation(
QStandardPaths::GenericConfigLocation);
QString genericData = QStandardPaths::writableLocation(
QStandardPaths::GenericDataLocation);
QDir configDirMoment, configDirMirage, dataDirMoment, dataDirMirage;
QString customConfigDirMoment(qEnvironmentVariable("MOMENT_CONFIG_DIR"));
configDirMoment = QDir(customConfigDirMoment.isEmpty()
? genericConfig + "/moment" : customConfigDirMoment);
QString customDataDirMoment(qEnvironmentVariable("MOMENT_DATA_DIR"));
dataDirMoment = QDir(customDataDirMoment.isEmpty()
? genericData + "/moment" : customDataDirMoment);
QString customConfigDirMirage(qEnvironmentVariable("MIRAGE_CONFIG_DIR"));
if (! customConfigDirMirage.isEmpty()) {
// MIRAGE_CONFIG_DIR is set.
// Mirage would definitely use this as the config directory.
// So this is where we should migrate from.
configDirMirage = QDir(customConfigDirMirage);
} else {
// No MIRAGE_CONFIG_DIR.
// Check if Mirage default config directory exists
// Check /matrix-mirage (Debian) first
QDir dirDeb(genericConfig + "/matrix-mirage");
if (dirDeb.exists()) {
// Default Debian config dir exists.
// So this is where we should migrate from.
configDirMirage = dirDeb;
} else {
// No /matrix-mirage found, so check /mirage
QDir dir(genericConfig + "/mirage");
if (dir.exists())
// Default config dir exists.
// So this is where we should migrate from.
configDirMirage = dir;
else
// No Mirage config dir found.
// Do not migrate.
return;
}
}
QString customDataDirMirage(qEnvironmentVariable("MIRAGE_DATA_DIR"));
if (! customDataDirMirage.isEmpty()) {
// MIRAGE_DATA_DIR is set.
// Mirage would definitely use this as the data directory.
// So this is where we should migrate from.
dataDirMirage = QDir(customDataDirMirage);
} else {
// No MIRAGE_DATA_DIR.
// Check if Mirage default data directory exists
// Check /matrix-mirage (Debian) first
QDir dirDeb(genericData + "/matrix-mirage");
if (dirDeb.exists()) {
// Default Debian data dir exists.
// So this is where we should migrate from.
dataDirMirage = dirDeb;
} else {
// No /matrix-mirage found, so check /mirage
QDir dir(genericData + "/mirage");
if (dir.exists())
// Default data dir exists.
// So this is where we should migrate from.
dataDirMirage = dir;
else
// No Mirage data dir found.
// Do not migrate.
return;
}
}
offerMigrateFromMirage(
configDirMoment, configDirMirage, dataDirMoment, dataDirMirage
);
}
bool setLockFile(QString configPath) {
QDir settingsFolder(configPath);
if (! settingsFolder.mkpath(".")) {
qFatal("Could not create config directory");
exit(EXIT_FAILURE);
}
lockFile = new QLockFile(settingsFolder.absoluteFilePath(".lock"));
lockFile->tryLock(0);
switch (lockFile->error()) {
case QLockFile::NoError:
return true;
case QLockFile::LockFailedError: {
qWarning("Opening already running instance");
QFile showFile(settingsFolder.absoluteFilePath(".show"));
showFile.open(QIODevice::WriteOnly);
showFile.close();
return false;
}
default:
qFatal("Cannot create lock file: no permission or unknown error");
exit(EXIT_FAILURE);
}
}
int main(int argc, char *argv[]) {
qInstallMessageHandler(loggingHandler);
// Define some basic info about the app before creating the QApplication
QApplication::setOrganizationName("moment");
QApplication::setApplicationName("moment");
QApplication::setApplicationDisplayName("Moment");
QApplication::setApplicationVersion("0.7.3");
QApplication::setAttribute(Qt::AA_EnableHighDpiScaling);
// app needs to be constructed before attempting to migrate
// because migrate displays a popup dialog
QApplication app(argc, argv);
if (shouldMigrateFromMirage()) tryMigrateFromMirage();
QString customConfigDir(qEnvironmentVariable("MOMENT_CONFIG_DIR"));
QString settingsFolder(
customConfigDir.isEmpty() ?
QStandardPaths::writableLocation(QStandardPaths::GenericConfigLocation)
+ "/" + QApplication::applicationName() :
customConfigDir
);
// Attempt to create a lockfile in the settings folder
if (! setLockFile(settingsFolder)) return EXIT_SUCCESS;
// Register handlers for quit signals, e.g. SIGINT/Ctrl-C in unix terminals
signal(SIGINT, onExitSignal);
#ifdef Q_OS_UNIX
signal(SIGHUP, onExitSignal);
#endif
// Force the default universal QML style, notably prevents
// KDE from hijacking base controls and messing up everything
QQuickStyle::setStyle("Fusion");
QQuickStyle::setFallbackStyle("Default");
// Register default theme fonts. Take the files from the
// Qt resource system if possible (resources stored in the app executable),
// else the local file system.
// The dev qmake flag disables the resource system for faster builds.
QFileInfo qrcPath(":src/gui/Window.qml");
QString src = qrcPath.exists() ? ":/src" : "src";
QList<QString> fontFamilies;
fontFamilies << "roboto" << "hack";
QList<QString> fontVariants;
fontVariants << "regular" << "italic" << "bold" << "bold-italic";
foreach (QString family, fontFamilies) {
foreach (QString var, fontVariants) {
QFontDatabase::addApplicationFont(
src + "/fonts/" + family + "/" + var + ".ttf"
);
}
}
// Create the QML engine and get the root context.
// We will add it some properties that will be available globally in QML.
QQmlEngine engine;
QQmlContext *objectContext = new QQmlContext(engine.rootContext());
// To able to use Qt.quit() from QML side
QObject::connect(
&engine, &QQmlEngine::quit, &app, &QApplication::quit, Qt::QueuedConnection
);
// Set the debugMode properties depending of if we're running in debug mode
// or not (`qmake CONFIG+=dev ...`, default in autoreload.py)
#ifdef QT_DEBUG
objectContext->setContextProperty("debugMode", true);
#else
objectContext->setContextProperty("debugMode", false);
#endif
// Register our custom non-visual QObject singletons,
// that will be importable anywhere in QML. Example:
// import Clipboard 0.1
// ...
// Component.onCompleted: print(Clipboard.text)
qmlRegisterSingletonType<Clipboard>(
"Clipboard", 0, 1, "Clipboard",
[](QQmlEngine *engine, QJSEngine *scriptEngine) -> QObject * {
Q_UNUSED(scriptEngine)
Clipboard *clipboard = new Clipboard();
// Register out custom image providers.
// QML will be able to request an image from them by setting an
// `Image`'s `source` to `image://<providerId>/<id>`
engine->addImageProvider(
"clipboard", new ClipboardImageProvider(clipboard)
);
return clipboard;
}
);
qmlRegisterSingletonType<Utils>(
"CppUtils", 0, 1, "CppUtils",
[](QQmlEngine *engine, QJSEngine *scriptEngine) -> QObject * {
Q_UNUSED(engine)
Q_UNUSED(scriptEngine)
return new Utils();
}
);
// Create the QML root component by loading its file from the Qt Resource
// System or local file system if not possible.
QQmlComponent component(
&engine,
qrcPath.exists() ? "qrc:/src/gui/Window.qml" : "src/gui/Window.qml"
);
if (component.isError()) {
for (QQmlError e : component.errors()) {
qCritical(
"%s:%d:%d: %s",
e.url().toString().toStdString().c_str(),
e.line(),
e.column(),
e.description().toStdString().c_str()
);
}
qFatal("One or more errors have occurred, exiting");
app.exit(EXIT_FAILURE);
}
component.create(objectContext)->setProperty("settingsFolder", settingsFolder);
// Finally, execute the app. Return its exit code after clearing the lock.
int exit_code = app.exec();
delete lockFile;
return exit_code;
}